The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 1986
Filed:
May. 29, 1984
Applicant:
Inventors:
Tadashi Ishikuro, Kanagawa, JP;
Ryuji Shirahata, Kanagawa, JP;
Takahito Miyoshi, Kanagawa, JP;
Masaaki Fujiyama, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428336 ; 360134 ; 360135 ; 360136 ; 427128 ; 427131 ; 428323 ; 428408 ; 428694 ; 428900 ;
Abstract
A magnetic recording medium is disclosed which comprises a non-magnetic support having provided on opposite surface thereof a magnetic recording layer, and a backing layer containing carbon black and a binder, said carbon having an average particle size of not less than 150 m.mu. and the weight ratio of carbon black and the binder being 1:3.0 to 1:10.
Quick Actions:
Ishikuro, Tadashi. (1986). Magnetic recording medium (U.S. Patent No. 4578311). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4578311
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile